440 adding a vapor return line?

Always ran both electric and HV mechanical pumps in series back in the day. Holley blue installed at rear frame rail. Car in North Florida (Blanding Blvd) never failed to vapor lock. All my lines were increased to 3/8 or larger. I installed a Moroso cool can and as long as I dropped some ice in prior to making the trip, either home to Orange Park or to Pecan Park dragtsrip it never had an issue. Never noticed a drop on the gauge, the damn thing would just boil up. Always thought a return line would help keep the fuel cooler. Just difficult to run a hard line back to the tank if you are using a stock tank configuration. I certainly would run a hard line though.